After her mother is shot at a checkpoint, fifteen-year-old Sarah--blonde, blue-eyed, and Jewish--finds herself on the run from a government that wants to see every person like her dead. Then Sarah meets a mysterious man with an ambiguous accent, a suspiciously bare apartment, and a lockbox full of weapons. He's a spy, and he needs Sarah to become one, too, to pull off a mission he can't attempt on his own: infiltrate a boarding school attended by...